package com.summer.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.summer.reggie.common.R;
import com.summer.reggie.entity.Employee;
import com.summer.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;


/**
 * 作者:夏天
 * qq:1205232048
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){
        //1.将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2.根据页面提交的用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);//调用业务层去数据库取
        //3.如果没有查询到则返回登录失败结果
        if(emp == null){
            return R.error("用户名不存在");
        }
        //4.密码比对, 如果不一致则返回登录失败的结果
        if(!emp.getPassword().equals(password)){
            return R.error("密码错误");
        }
        //5.查看员工状态, 如果为已禁用状态, 则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
        //6.登录成功, 将员工id存入session中并返回登陆成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出功能
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }


    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String > save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工信息{}",employee.toString());
        //设置初始密码123456,需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //设置创建时间和更新时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //通过session去获得用户id
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //设置创建用户和更新用户
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);
        //通过调用mybatis plus 的sql方法去调用数据库
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page = {}, pageSize = {}, name = {}", page, pageSize, name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件 name为前端传过来的 与 getName进行like模糊查询
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 根据员工id修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        /**
            Long empId = (Long) request.getSession().getAttribute("employee");
            employee.setUpdateTime(LocalDateTime.now());
            employee.setUpdateUser(empId);
         */

        employeeService.updateById(employee);
        return R.success("员工信息修改成功!");
    }

    /**
     * 编辑员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getEmployeeById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee emp = employeeService.getById(id);
        if(emp != null){
            return R.success(emp);
        }
        return R.error("该员工不存在");
    }
}
